I think the bigger issue is the 500 mil/quarter stock buybacks and the several million compensation packages for the executives than the burger flipper wanting enough money to make it worthwhile to leave their house.
And they've been complaining for decades at this point that corporate is failing them. Not enough new products, bad business and advertising strategies, store renos, the list goes on.
The burger flipper making a lot more money is doing a lot more for their franchisee's than the executives are as of late.